US Bridges

Pa Tpk (I-76) over T-380

Fair

Dauphin County, Pennsylvania · Lower Swatara Twp · Structure no. 000000000014610

Built
1949
76 years old
Condition
Fair
inspected March 2023
Type
Tee Beam
Concrete
Length
29 ft
1 main span
Daily traffic
26,550
2008 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-76) over T-380 is a concrete tee beam carrying Pa Tpk (I-76) over T-380 in Dauphin County, Pennsylvania. It was built in 1949, so it is 76 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 26,550 vehicles a day, roughly 23% of them trucks, projected to reach 35,620 by 2030. The structure is 29 ft (8.8 m) long and 38 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesPa Tpk (I-76)
CrossesT-380
LocationLower Swatara Twp
RouteInterstate 76
CountyDauphin County
StatePennsylvania
Coordinates40.21486, -76.77896
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83 US tons
Inventory rating50 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span24 ft (7.3 m)
Deck width38 ft (11.5 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,550 (2008)
Projected traffic35,620 by 2030
Trucks23%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Tpk (I-76) over T-380 built?

It was built in 1949, making it 76 years old in 2025.

What condition is Pa Tpk (I-76) over T-380 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does Pa Tpk (I-76) over T-380 carry?

About 26,550 vehicles per day (2008 count), of which roughly 23% are trucks.

How long is Pa Tpk (I-76) over T-380?

The structure is 29 ft (8.8 m) long with a longest span of 24 ft (7.3 m) and a deck 38 ft wide.

Who owns Pa Tpk (I-76) over T-380?

It is owned by the State Toll Authority.